ai/size-limit

Health v2 · maintenance only

Adoption not part of the score

6941 stars · 1760 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

Size Limit is a performance budget tool for JavaScript that calculates the real cost (size and execution time) of your app or library and fails CI if it exceeds configured limits. It integrates with GitHub Actions and other CI systems to flag oversized dependencies in pull requests.

Use cases

• keep my npm library bundle size under a limit
• fail CI when a pull request adds a heavy dependency
• measure how long a browser takes to download and execute my JS
• post bundle size changes as a comment on pull requests
• analyze why my bundle is large with --why
• set performance budgets for a JavaScript app

When to choose

• you maintain a JS library or app and want to enforce bundle size or time budgets in CI
• you want PR feedback on bundle size changes
• you need tree-shaking-aware, dependency-inclusive size calculations

When to avoid

• you need full runtime performance profiling rather than bundle cost estimation
• your project is not JavaScript-based
• you want visual bundle analysis only without budget enforcement

Facets

cli-tool · maturity stable

benchmarking ci-cd developer-tools cli developer-tools performance web-development frontend cli cross-platform performance-budget bundle-size javascript ci pull-request-checks tree-shaking nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="ai/size-limit")